Hands-free switch

Materials:

  • 9 V battery
  • 1 LED
  • 1 220 Ohm resistor
  • Wire, cardboard

This switch is activated but a push. Pushing is a motion that can be performed by many parts of the body, I have tested elbow, toe and nose push on this switch. The structure of the switch is a simple barrier of cardboard that guides the power source. Upon connection with the wires, the circuit is closed and the LED lights up.

https://vimeo.com/326082330

Integration: I couldn’t integrate this switch with the Huzzah microcontroller, because this battery’s voltage is too high for Huzzah and it could fry it.